Ball-bearing



(No Model.)

J. NAISMITH.

BALL BEARING.

Patented Nov. 2, 1897.

ATTORNEYS.

llll. IIIIZAI I lllllill lllll WITNESSES we mums PETERS oomnumumo waswmm'on u c UNITED STATES PATENT @rnrcn JAMES NAISMITH, OF KEARNEY, NEBRASKA.

BALL-BEARING.

SPECIFICATION forming part of Letters Patent No. 593,113, dated November 2, 1897.

Application filed January 21,1897- Serial No. 620,046. (No model.)

To aZZ whom it may concern:

Be it known that I, JAMEs NAISMITH, of Kearney, in the county of Buffalo and State of Nebraska, have invented a new and ImprovedBall-Bearing, of which the following is a full, clear, and exact description.

The object of the invention. is to provide a new and improved ball-bearing more especially designed for use on railroad-cars, locomotives, and other vehicles and machines and which is simple and durable in construction and arranged to allow the axle free play laterally andup and down to permit the axle to readily assume an angular position relative to the box at the time a car passes over curves and without danger of binding or gripping the axle or the balls in the race.

The invention consists principally of a box adapted to slide vertically in the truck-jaws and arranged for engagement by the equalizing-bar of the truck, a sleeve secured to the axle-journal and extending loosely within the said box, and balls interposed between the said box and sleeve in a'race formed by an external recess in the said sleeve and an internal recess in the said box, the race being wider than the diameter of the balls.

The invention also consists of certain parts and details and combinations of the same, as will be fully described hereinafter and then pointed out in'the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of the improvement as applied on a railroad passenger-car truck. Fig. 2 isan enlarged plan view of the improvement. Fig. 3 is a cross-section of the same on the line 3 3 of Fig. 2. Fig. 4:.isareduced rear elevation of the same with parts in section. Fig. 5 is a face view of part of the duStguard, and Fig. 6 is an edge view of the same.

The car-axle A is formed at each end with a reduced journal A, on which is secured a sleeve B, preferably made in two parts divided longitudinally and secured in place by a collar 0, preferably made in two parts fastened together by bolts 0 the collar being formed with a beveled annular inwardly-projecting flange C engaging a recess A having a beveled side and formed on the journal A. By the arrangement described the sleeve B is clamped by the collar 0 between the latter and a shoulder formed on the axle A by the reduced portion forming the journal, and the collar is not liable to become loose or disengaged from the journal, owing to the annular flange engaging the recess. The sleeve B extends loosely within a transverse openin g formed in the box D, provided on its sides with offsets D, fitted to slide in the jaws E of the truck-frame, the said box being also provided on its top with a recess D engaged by one end of the equalizing-bar F of the truck, as is plainly shown in Fig. 1.

Between the sleeve 13 and the inside of the box D are interposed a series of balls G, traveling in a race formed by an annular external recess 13', formed in the sleeve 13, and an internal annular recess D formed on the inside of the box D. The race thus formed is considerably wider than the diameter of the balls G, so that the latter have but a slight contact with the sleeve and the box to permit the sleeve to swing with the axle into an inclined or angular position relative to the box with the balls G as the fulcrum. This is especially serviceable to prevent straining of the axle or clamping'of the balls in the race when the vehicle passes around curves and the axle assumes an angular position. The sleeve B extends within the box D, so that when the axle moves into an inclined angular position at the time a car is passing around curves then the raceway, being wider than the balls, allows the sleeve to adjust itself to the box and prevent undue friction or injury to any of the parts.

It will beseen that by the arrangement described the bearing will be principally on the balls held at the time in the top of the sleeve B, and as soon as the balls roll off to one side they pass freely down the race to be pushed up on the opposite side to again become bearingballs when nearing the top of the sleeve.

The front end of the box D is closed by a suitable cap H, fastened by bolts H to the said box D, the said cap being provided at its top with a filling-hole H for introducing a lubricant into the box without opening the same.

ICO

The rear end of the box D is formed with a vertically-extending opening D to receive and hold a dust-guard I for the said box. The dust-guard I is preferably made of wood and in two parts I and 1 formed with registering openings 1 If, so as to snugly engage the axle A, as plainly indicated in Figs. 3 and 4. The parts or sections I I are further pro* vided with overlapping sides I and I ,respectively, thesaid sides being reduced in thickness to about one-half the thickness of the parts I 1 so as to form flush faces on both sides of the dust-guard.

The top of the section I is pressed on by a spring J, and a similar spring J presses on the under side of the section 1 the said springs being held in the opening I) by caps K and K, connected with each other by bolts L, also passing through the opening D The caps K K are fitted into recesses on the top and bottom of the box D and are securely held in place by the bolts L and close the opening D at both top and bottom to prevent dust from passing into the box by Way of the said opening.

By the arrangement described, no dust or other impurities can pass to the inside of the box D and thereby affect the proper working of the bearing and increase the friction between the parts Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. A ball-bearing,comprising a box adapted to slide in truck-jaws and arranged for engagement by the equalizing-bar of the truck, a sleeve secured to the axle-journal and extending loosely within the said box, balls in terposed between the said box and sleeve in a race formed by an external recess on the said sleeve and an internal recess on the said box, the race being wider than the diameter of the balls, and a collar made in sections and formed with an annular flange engaging a recess in the journal, the collar serving to clamp the sleeve in place on the journal, sub stantially as shown and described.

2. The combination of ajournal-box having an annular groove on its interior wall, a j ournal projected in the journal-box and having an annular groove, a sleeve carried on the journal and having anannular groove adjacent to the annular groove in the wall of the box, a series of antifriction-balls mounted Within the grooves in the sleeve and journalbox, and a sectional collar having projected portions running in the annular groove in the journal, the sectional collar serving to hold the sleeve in place, substantially as described. 3. A bearing having a journal-box with an annular groove running around the interior wall thereof, a journal projected into the box, one end of the journal having an annular groove, a sleeve mounted on the journal directly inward from the annular groove in the end thereof, the sleeve having an annular groove matching with the annular groove in the journal-box, a series of antifriotion-balls carried in the annular grooves in the journalbox and sleeve, a collar formed in sections clamped on the journal and having portions runnin gin the annular groove thereof, whereby to hold the sleeve in place, and a cap fastened over the outer face of the journal-box and inclo'sing the collar and the end of the journal, substantially as described.

JAMES NAISMITH.

Witnesses: EDWARD E. Fumes,- SAMUEL KINGSTON. 

